Argyranthemum frutescens plant named ‘Argymidowi’

ABSTRACT

A new and distinct cultivar of  Argyranthemum frustescens  plant named ‘Argymidowi’ characterized by its very compact plant habit, nice bright white double flower heads and floriferous character through Summer.

Latin name of the genus and species of the plant claimed: Argyranthemum frutescens.

Varietal denomination: ‘Argymidowi’.

BACKGROUND OF THE NEW PLANT

The present invention relates to a new and distinct cultivar of Marguerite Daisy plant, botanically known as Argyranthemum frutescens and hereinafter referred to by the cultivar name ‘Argymidowi.’

The new cultivar is a product of a planned breeding program conducted by the inventor in Enkhuizen, The Netherlands. The new cultivar ‘Argymidowi’ is compact with early freely flowering habit, which can be grown without growth regulators.

The new Argyranthemum originated from an open-pollination conducted in Enkhuizen, The Netherlands in 2001 of a proprietary selection of Argyranthemum frutescens identified as code number ‘D0039-1,’ not patented, as the female, or seed, parent with an unknown selection of Argyranthemum frutescens as the male, or pollen, parent.

The cultivar ‘Argymidowi’ was discovered and selected as a single plant within the progeny of the stated open pollination in a controlled environment in Enkhuizen, the Netherlands in August 2002. Asexual reproduction of the new Argyranthemum by terminal cuttings in a controlled environment in Enkhuizen, The Netherlands since August 2002, has shown that the unique features of this new Argyranthemum are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The new Argyranthemum has not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature and light intensity without, however, any variance in genotype.

The following characteristics have been repeatedly observed and are determined to be basic characteristics of ‘Argymidowi’ and distinguish to new Argyranthemum as a new and distinct cultivar:

-   -   1. Compact plant habit.     -   2. Freely branching habit and short internodes; dense and bushy         plant habit.     -   3. Early flowering habit.     -   4. Freely flowering habit with numerous inflorescences per         plant.     -   5. Double flower heads.     -   6. Short peduncle length.

TABLE 1 DIFFERENCES BETWEEN THE NEW CULTIVAR ‘ARGYMIDOWI’ AND TWO SIMILAR CULTIVARS ‘Daisy Crazy ‘Summer Song White Chrystal’ White’ ‘Argymidowi’ (Not patented) (Not patented) Plant height 20 cm 40 cm 30 cm Plant width 30 cm 55 cm 35 cm Flower diameter 3 cm 3.5 cm 2.5 cm Flower shape Double Semi double Double Peduncle length 3.5-6 cm 8-12 cm 8-12 cm

DESCRIPTION OF THE PHOTOGRAPHS

The accompanying color photographs illustrate the overall appearance of the new cultivar, showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Argyranthemum.

DESCRIPTION OF THE NEW CULTIVAR

The aforementioned photographs, following detailed observations and averaged measurements describe plants of this new Marguerite Daisy plant. The data were collected from plants from asexual reproductions carried out in Enkhuizen, The Netherlands. The plant history was taken on 28 weeks old plants, grown in the open field in Enkhuizen, The Netherlands with day temperatures ranging from 16 to 35 degrees C., and night temperatures ranging from 10 to 20 degrees C.

Color references are primarily to the R.H.S. Colour Chart of The Royal Horticultural Society, 1995 Edition, except where general terms of ordinary dictionary significance are used.

-   The plant:     -   -   Classification.—Botanical : Argyranthemum frutescens cv.             ‘Argymidowi’. -   Parentage:     -   -   Female parent.—Proprietary seedling section of Argyranthemum             frutescens, identified as number ‘D0039-1’ (not patented).             Breeder's code of the new plant is ‘E0271-2.’         -   Male parent.—Unidentified section of Argyranthemum             frutescens (not patented). -   Propagation:     -   -   Type cuttings.—Terminal vegetative cuttings.         -   Time to intiated roots.—7-10 days at air temperatures of 21             degrees C.         -   Time to develop roots.—7-14 days at air temperature of 18             degrees C.         -   Root description.—Fibrous, relatively fine, white in color.         -   Rooting description.—Freely branching, dense. -   Plant description:     -   -   Growth habit.—Upright and rounded shape.         -   Plant height.—About 20 cm.         -   Vigor.—Vigorous compact.         -   Speading area of plant.—About 30 cm.         -   Strength.—Very good.         -   Branching character.—Freely branching, plants do not require             pinching.         -   Crop time.—About 9 weeks are required to produce a finished             flowering plant in a 10.5 cm container from a good developed             cutting. -   Lateral branch description:     -   -   Length.—16 cm.         -   Diameter.—7 cm.         -   Shape.—Round, bit grooved.         -   Anthocyanin pigmentation.—Absent.         -   Texture.—Smooth, glabrous. Base : Woody.         -   Length of internode.—0.5-1 cm.         -   Pubescence.—Absent.         -   Color.—144A. -   The foliage:     -   -   Arrangement.—Alternate, simple.         -   Shape of leaf.—Bipinnatisect.         -   Leaf apex.—Broadly acute.         -   Leaf base.—Attenuate, clasping.         -   Margin.—Lanciniate.         -   Texture.—Thick glabrous smooth.         -   Length.—3-5 cm.         -   Width.—1.5-2.5 cm.         -   Depth of incision.—Lanciniate.         -   Color.—Upper side : 137A. Lower side : 143C. Old leaf :             147A.         -   Pubescence.—Absent.         -   Petiole.—Length : About 0.5-1 cm. Diameter : About 2 mm.             Texture : Smooth, glabrous. Color : 137B.         -   Venation.—Shape : Pinnate. Color : 137A. -   Inflorescence description:     -   -   Appearance.—Daisy-type inflorescences with ligulate ray             florets. Disc and ray florets develop acropetally on a             capitulum. Inflorescences held upright and outwardly on             terminal and axillary peduncles. Inflorescences positioned             perpendicular to the peduncles. Inflorescences persistent.         -   Flowering response.—Under natural conditions, plant flower             from Spring to early Fall in N-W Europe; plants flower             continuous during this period.         -   Inflorescence longevity.—Inflorescences last about ten days             on the plant.         -   Quantity of inflorescences.—Freely flowering, about 200 open             inflorescences and inflorescence buds per plant. -   Flower bud:     -   -   Peduncle.—Length : 3.5-6 cm. Diameter : 2 mm. Strength :             Strong. Aspect : Upright to slightly outward. Texture :             Smooth, glabrous. Color : 137C.         -   Inflorescence bud.—Height : 5 mm. Diameter : 5 mm. Shape :             Ovoid. Color : 199C. -   Inflorescence:     -   -   Size.—Diameter : 3 cm. Depth : About 7-10 cm.         -   Form.—Double flowered.         -   Receptacle.—Height : About 4 mm. Diameter : About 10 mm.         -   Involucre/phyllaries.—3 series of 5 bracts, tightly to             receptacle. Appearance : Margins, papery and membranous.             Shape : Elliptic. Apex : Broad. Base : Truncate. Texture :             Smooth glabrous. Margin : Entire. Length : 2 mm. Width :             1 mm. Color : Upper: 144A, Lower: 139B.         -   Fragrance.—Absent. -   Ray florets:     -   -   Shape of ray florets.—Ligulate.         -   Apex.—Emarginate.         -   Base.—Attenuate.         -   Margin.—Entire.         -   Color.—Upper surface : 155C. Lower surface : 155C.         -   No. of ray florets per inflorescene.—100-200 florets             arranged in many whorls.         -   Size.—Length : 0.3-1.0 cm. Width : 0.2-0.3 cm.         -   Texture.—Smooth, glabrous; longitudinally ridged.         -   Gynoecium.—Present on ray florets.         -   Pistil number.—One per floret.         -   Pistil length.—±3 mm.         -   Style color.—Yellow green 144D.         -   Style length.—±1 mm.         -   Stigma color.—Yellow orange 14A.         -   Stigma shape.—Bilobed.         -   Ovary color.—144C. -   Seed/fruit: Seed and fruit production is not observed. -   Disease resistance: No susceptibility nor resistance to fungal,     bacterial or viral pathogens has been noted. Material is free of     virus and Chrysanthemum stunt viroid (CSVd). -   Temperature/weather tolerance: Plants of the new Argyanthemum have     been observed to be tolerant to rain, wind and to temperatures from     0° C. to 36° C. 

1. A new and distinct variety of Argyranthemum frutescens plant, named ‘Argymidowi,’ substantially as herein illustrated and described. 